Fig. 4

The distribution of particles (rp=2 μm) after the first injection at (a) t=0.27 s, (b) t=0.32 s, (c) t=0.40 s, (d) t=0.45 s, (e) t=0.50 s, (f) t=1.08 s. The magnetization vectors are shown by the white arrows. The magnetic flux density and the velocity magnitude of the particles are represented by the colour contour. It is worth noting that the particles leaving the first branch were not included in the capture efficiency calculation